JPS55118048A - Method and apparatus for developing - Google Patents
Method and apparatus for developingInfo
- Publication number
- JPS55118048A JPS55118048A JP2532179A JP2532179A JPS55118048A JP S55118048 A JPS55118048 A JP S55118048A JP 2532179 A JP2532179 A JP 2532179A JP 2532179 A JP2532179 A JP 2532179A JP S55118048 A JPS55118048 A JP S55118048A
- Authority
- JP
- Japan
- Prior art keywords
- biases
- drum
- toner
- latent image
- alternating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
- G03G15/0914—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush with a one-component toner
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G13/00—Electrographic processes using a charge pattern
- G03G13/06—Developing
- G03G13/08—Developing using a solid developer, e.g. powder developer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing For Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE: To make image density stable with a simple constitution by applying low frequency alternate biases between a developer carrying body and a latent image holding body to perform development processing by one-component developer and adjusting the alternate biases according to the latent image densities.
CONSTITUTION: If the low-frequency alternating biases from an alternating voltage power source 5 are applied between a conductive sleeve 3 for forming the magnetic brush of one-component toner on the surface and the back electrode 2 of a photosensitive drum 1 to accelerte the transfer of the toner onto the drum 1 at the one phase and return the toner from the drum 1 to the sleeve 3 at the antiphase, then the toner deposited on the non-image part of the drum 1 is removed and the latent images are stably developed by the one-component developer. If the alternating biases are adjusted according to latent image detection potentials, etc. by way of a control circuit 8, then even the latent images of changing potentials may be subjected to the development processing which does not require operations such as adjustment of light quantity, to the desired stable density.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2532179A JPS55118048A (en) | 1979-03-05 | 1979-03-05 | Method and apparatus for developing |
US06/124,912 US4337306A (en) | 1979-03-05 | 1980-02-26 | Developing method in which a bias is adjustable in accordance with a latent image and an apparatus therefor |
DE19803008488 DE3008488A1 (en) | 1979-03-05 | 1980-03-05 | DEVELOPMENT PROCEDURE AND DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2532179A JPS55118048A (en) | 1979-03-05 | 1979-03-05 | Method and apparatus for developing |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55118048A true JPS55118048A (en) | 1980-09-10 |
JPS6333147B2 JPS6333147B2 (en) | 1988-07-04 |
Family
ID=12162708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2532179A Granted JPS55118048A (en) | 1979-03-05 | 1979-03-05 | Method and apparatus for developing |
Country Status (3)
Country | Link |
---|---|
US (1) | US4337306A (en) |
JP (1) | JPS55118048A (en) |
DE (1) | DE3008488A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58129445A (en) * | 1982-01-28 | 1983-08-02 | Toshiba Corp | Copying device |
JPS59121077A (en) * | 1982-12-28 | 1984-07-12 | Toshiba Corp | Electrostatic latent image developing device |
JPS6095574A (en) * | 1983-10-31 | 1985-05-28 | Canon Inc | Image forming device |
JPS60131555A (en) * | 1983-12-20 | 1985-07-13 | Konishiroku Photo Ind Co Ltd | Developing method |
JPH05249823A (en) * | 1992-10-30 | 1993-09-28 | Canon Inc | Developing device |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4755850A (en) * | 1981-01-13 | 1988-07-05 | Canon Kabushiki Kaisha | Electrostatic recording apparatus including a controlled developer device |
US4607933A (en) * | 1983-07-14 | 1986-08-26 | Konishiroku Photo Industry Co., Ltd. | Method of developing images and image recording apparatus utilizing such method |
GB2145942B (en) * | 1983-08-05 | 1987-03-18 | Konishiroku Photo Ind | Developing latent eletrostatic images |
EP0153038B1 (en) * | 1984-01-30 | 1992-04-01 | Konica Corporation | Method of forming images |
JPH0690556B2 (en) * | 1985-06-18 | 1994-11-14 | 富士通株式会社 | Electrophotographic recording device |
US4857958A (en) * | 1987-03-25 | 1989-08-15 | Kabushiki Kaisha Toshiba | Electronic copying apparatus having function of partially changing image reproduced from original image |
US4761672A (en) * | 1987-07-28 | 1988-08-02 | Xerox Corporation | Ramped developer biases |
US5066979A (en) * | 1989-01-13 | 1991-11-19 | Canon Kabushiki Kaisha | Color image forming apparatus wherein plural colors can be formed through one printing cycle |
US5241359A (en) * | 1989-11-22 | 1993-08-31 | Xerox Corporation | Biasing switching between tri-level and bi-level development |
US5241358A (en) * | 1989-11-22 | 1993-08-31 | Xerox Corporation | Biasing scheme for improving latitudes in the tri-level xerographic process |
JPH05216337A (en) * | 1991-07-31 | 1993-08-27 | Ricoh Co Ltd | Image forming device |
DE10043033A1 (en) | 2000-09-01 | 2002-03-21 | Csat Computer Systeme | Electrophotographic or ionographic printer with variable printing speed |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3893418A (en) * | 1974-05-30 | 1975-07-08 | Xerox Corp | Xerographic developing apparatus |
JPS50125738A (en) * | 1974-03-20 | 1975-10-03 | ||
JPS519640A (en) * | 1974-07-15 | 1976-01-26 | Hitachi Ltd | RANDAMUAKUSESUKIOKUSOCHINIOKERU KIISAACHOBATSUFUAKIOKUSOCHINOKAKIKOMIHOSHIKI |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2956487A (en) * | 1955-03-23 | 1960-10-18 | Rca Corp | Electrostatic printing |
GB1458766A (en) * | 1973-02-15 | 1976-12-15 | Xerox Corp | Xerographic developing apparatus |
US3997688A (en) * | 1974-05-31 | 1976-12-14 | Xerox Corporation | Developing an electrical image |
US3961951A (en) * | 1974-12-26 | 1976-06-08 | Itek Corporation | Electrophotographic method for producing multiple copies from the same electrostatic image |
US4121931A (en) * | 1976-06-30 | 1978-10-24 | Minnesota Mining And Manufacturing Company | Electrographic development process |
US4248524A (en) * | 1977-07-11 | 1981-02-03 | Canon Kabushiki Kaisha | Method of and apparatus for stabilizing electrophotographic images |
CA1138723A (en) * | 1978-07-28 | 1983-01-04 | Tsutomu Toyono | Developing method for developer transfer under electrical bias and apparatus therefor |
CA1142804A (en) * | 1978-07-28 | 1983-03-15 | Junichiro Kanbe | Developing method for developer transfer under electrical bias and apparatus therefor |
-
1979
- 1979-03-05 JP JP2532179A patent/JPS55118048A/en active Granted
-
1980
- 1980-02-26 US US06/124,912 patent/US4337306A/en not_active Expired - Lifetime
- 1980-03-05 DE DE19803008488 patent/DE3008488A1/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50125738A (en) * | 1974-03-20 | 1975-10-03 | ||
US3893418A (en) * | 1974-05-30 | 1975-07-08 | Xerox Corp | Xerographic developing apparatus |
JPS519640A (en) * | 1974-07-15 | 1976-01-26 | Hitachi Ltd | RANDAMUAKUSESUKIOKUSOCHINIOKERU KIISAACHOBATSUFUAKIOKUSOCHINOKAKIKOMIHOSHIKI |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58129445A (en) * | 1982-01-28 | 1983-08-02 | Toshiba Corp | Copying device |
JPS59121077A (en) * | 1982-12-28 | 1984-07-12 | Toshiba Corp | Electrostatic latent image developing device |
JPS6095574A (en) * | 1983-10-31 | 1985-05-28 | Canon Inc | Image forming device |
JPH0527864B2 (en) * | 1983-10-31 | 1993-04-22 | Canon Kk | |
JPS60131555A (en) * | 1983-12-20 | 1985-07-13 | Konishiroku Photo Ind Co Ltd | Developing method |
JPH0451027B2 (en) * | 1983-12-20 | 1992-08-17 | Konishiroku Photo Ind | |
JPH05249823A (en) * | 1992-10-30 | 1993-09-28 | Canon Inc | Developing device |
Also Published As
Publication number | Publication date |
---|---|
US4337306A (en) | 1982-06-29 |
DE3008488C2 (en) | 1992-09-17 |
DE3008488A1 (en) | 1980-09-18 |
JPS6333147B2 (en) | 1988-07-04 |
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